Fact Check: In 2024, atmospheric CO2 levels reached 424.61 ppm.

Fact Check: "In 2024, atmospheric CO2 levels reached 424.61 ppm."

What We Know

In 2024, atmospheric carbon dioxide (CO2) levels reached a record high of 424.61 parts per million (ppm), according to multiple reputable sources. The National Oceanic and Atmospheric Administration (NOAA) reported that the annual average CO2 concentration at Mauna Loa Observatory, where continuous monitoring began in 1958, was 424.61 ppm for the year 2024 (NOAA Climate.gov). This figure represents a significant increase of 3.75 ppm from the previous year, marking the largest one-year increase recorded (NOAA).

Analysis

The claim that atmospheric CO2 levels reached 424.61 ppm in 2024 is supported by data from NOAA, which is a credible source for climate-related information. NOAA's Global Monitoring Laboratory has been tracking atmospheric CO2 levels since the late 1950s and is recognized for its rigorous scientific methodology. The reported increase of 3.75 ppm is corroborated by independent measurements from the Scripps Institution of Oceanography, which also noted a peak of 426.7 ppm in May 2024, just shy of the annual average reported by NOAA (NOAA).

Additionally, a report from Statista confirms the annual average CO2 concentration of 424.61 ppm for 2024, reinforcing the reliability of the data (Statista). The consistency across these sources enhances the credibility of the claim.

While some sources may present slightly varying figures for peak monthly averages, the annual average of 424.61 ppm remains consistent across the most authoritative reports. This indicates that the claim is not only plausible but also substantiated by comprehensive data analysis.

Conclusion

Verdict: True
The claim that atmospheric CO2 levels reached 424.61 ppm in 2024 is accurate, supported by multiple reputable sources including NOAA and Statista. The data reflects a significant and concerning trend in atmospheric CO2 concentrations, underscoring the ongoing impact of human activities on climate change.

Fact Check: In 2024, atmospheric CO2 levels reached 424.61 ppm.